:root {
  --bg: #0d1117;
  --bg-secondary: #161b22;
  --bg-card: #1c2129;
  --border: #30363d;
  --text: #e6edf3;
  --text-muted: #8b949e;
  --accent: #58a6ff;
  --accent-hover: #79b8ff;
  --accent-glow: rgba(88, 166, 255, 0.15);
  --green: #3fb950;
  --purple: #bc8cff;
  --font: 'Inter', -apple-system, sans-serif;
  --mono: 'JetBrains Mono', monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s;
}
a:hover { color: var(--accent-hover); }

.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 1.5rem;
  width: 100%;
}

/* ---- NAV ---- */
.site-header {
  border-bottom: 1px solid var(--border);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  background: rgba(13, 17, 23, 0.85);
  backdrop-filter: blur(12px);
  z-index: 100;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text);
  letter-spacing: -0.02em;
}
.nav-brand:hover { color: var(--accent); }

.nav-links { display: flex; gap: 1.5rem; }

.nav-links a {
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
  transition: all 0.2s;
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--text);
  border-bottom-color: var(--accent);
}

/* ---- HERO ---- */
.hero {
  padding: 5rem 0 3rem;
}

.hero h1 {
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 0.75rem;
}

.hero h1 .accent { color: var(--accent); }

.hero p {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 560px;
  margin-bottom: 1.5rem;
}

.hero-links {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.25rem;
  border-radius: 8px;
  font-weight: 500;
  font-size: 0.9rem;
  transition: all 0.2s;
}

.btn-primary {
  background: var(--accent);
  color: var(--bg);
}
.btn-primary:hover {
  background: var(--accent-hover);
  color: var(--bg);
}

.btn-outline {
  border: 1px solid var(--border);
  color: var(--text);
}
.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-glow);
}

/* ---- SECTIONS ---- */
.section {
  padding: 3rem 0;
}

.section-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}

.section-title::before {
  content: '# ';
  color: var(--accent);
  font-family: var(--mono);
}

/* ---- BLOG CARDS ---- */
.post-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.post-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.5rem;
  transition: all 0.2s;
}

.post-card:hover {
  border-color: var(--accent);
  box-shadow: 0 0 20px var(--accent-glow);
  transform: translateY(-2px);
}

.post-card h3 {
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
}

.post-card h3 a { color: var(--text); }
.post-card h3 a:hover { color: var(--accent); }

.post-card p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
}

.post-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  color: var(--text-muted);
  font-size: 0.8rem;
}

.post-tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.tag {
  background: var(--accent-glow);
  color: var(--accent);
  padding: 0.15rem 0.6rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 500;
}

/* ---- PROJECT CARDS ---- */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1rem;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.5rem;
  transition: all 0.2s;
}

.project-card:hover {
  border-color: var(--accent);
  box-shadow: 0 0 20px var(--accent-glow);
}

.project-card h3 { margin-bottom: 0.5rem; }

.project-card p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.project-tech {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.tech-tag {
  background: rgba(63, 185, 80, 0.1);
  color: var(--green);
  padding: 0.15rem 0.6rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 500;
}

/* ---- POST (single) ---- */
.post { padding: 3rem 0; }

.post-header {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.post-header h1 {
  font-size: 2rem;
  letter-spacing: -0.03em;
  margin-bottom: 0.75rem;
}

.post-content h2 {
  font-size: 1.4rem;
  margin: 2rem 0 1rem;
  letter-spacing: -0.02em;
}

.post-content h3 {
  font-size: 1.15rem;
  margin: 1.5rem 0 0.75rem;
}

.post-content p {
  margin-bottom: 1.25rem;
}

.post-content ul, .post-content ol {
  margin-bottom: 1.25rem;
  padding-left: 1.5rem;
}

.post-content li { margin-bottom: 0.4rem; }

.post-content code {
  font-family: var(--mono);
  background: var(--bg-secondary);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  font-size: 0.85em;
}

.post-content pre {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem;
  overflow-x: auto;
  margin-bottom: 1.25rem;
}

.post-content pre code {
  background: none;
  padding: 0;
  font-size: 0.85rem;
}

.post-content blockquote {
  border-left: 3px solid var(--accent);
  padding-left: 1rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}

.post-content img {
  max-width: 100%;
  border-radius: 8px;
  margin: 1rem 0;
}

.post-footer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

/* ---- SKILLS ---- */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

@media (max-width: 640px) {
  .skills-grid { grid-template-columns: 1fr; }
}

/* ---- ABOUT ---- */
.about-content {
  font-size: 1.05rem;
}

.about-content p { margin-bottom: 1.25rem; }

/* ---- FOOTER ---- */
.site-footer {
  margin-top: auto;
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 0.75rem;
}

.footer-links a {
  color: var(--text-muted);
  transition: color 0.2s;
}

.footer-links a:hover { color: var(--accent); }

/* ---- RESPONSIVE ---- */
@media (max-width: 640px) {
  .hero h1 { font-size: 1.75rem; }
  .hero p { font-size: 1rem; }
  .project-grid { grid-template-columns: 1fr; }
  .nav-links { gap: 1rem; }
  .nav-links a { font-size: 0.8rem; }
}

/* ---- SYNTAX HIGHLIGHTING (rouge) ---- */
.highlight .k, .highlight .kd, .highlight .kn, .highlight .kp,
.highlight .kr, .highlight .kt { color: #ff7b72; }
.highlight .s, .highlight .s1, .highlight .s2, .highlight .se { color: #a5d6ff; }
.highlight .c, .highlight .c1, .highlight .cm, .highlight .cs { color: var(--text-muted); font-style: italic; }
.highlight .nb, .highlight .bp { color: var(--purple); }
.highlight .nf, .highlight .nx { color: #d2a8ff; }
.highlight .nn { color: #ffa657; }
.highlight .mi, .highlight .mf { color: #79c0ff; }
.highlight .o, .highlight .ow { color: #ff7b72; }